Misconstrued from the recommendation to walk facing the traffic on rural roads with no sidewalk..
at least the runners salmoning in the MUP will see you , the ones you have to pass from the rear you must ring your bell
or bump into .. my peeve is loud earbuds so even the Bell is inaudible.
On a bike tour on the beach in LA the MUP is sand right off the edge of the concreter slab.
following behind Blonde Gidget in a Bikini on rollerblades with headphones so making it hard to pass as the skating took up 3/4 of the width ..
[then 39] I was so tempted to slip the front wheel under her bottom ..

. But just stayed back and watched the view ..